Hello. I am sorry for your loss. I would definitity go after her for money back. Does she live close to you. If she does I would first stop at the police dept near her house and tell them what is going on. Then I would go to her house. So the police already know this might be a problem
I would talk to her nice ans calmly. Tell her what you want. That is it see what she does
Also if you want to knew pup please go on the YTCA website. Best place to find a pup from reputable breeders